/**
* @brief KmlExport::exportToKML Triggers logfile export to KML.
*/
bool KmlExport::exportToKML()
{
bool ret = open();
if (!ret) {
qDebug () << "Logfile failed to open during KML export";
return false;
}
// Parses logfile and generates KML document
ret = preparseLogFile();
if (!ret) {
qDebug () << "Logfile preparsing failed";
return false;
}
// Call parser.
parseLogFile();
// Add track to <Document>
document->add_feature(trackFolder);
// Add timespans to <Document>
document->add_feature(timestampFolder);
// Add ground track to <Document>
{
LineStringPtr linestring = factory->CreateLineString();
linestring->set_extrude(false); // Do not extrude to ground
linestring->set_altitudemode(kmldom::ALTITUDEMODE_CLAMPTOGROUND);
linestring->set_coordinates(wallAxes[0]);
MultiGeometryPtr multiGeometry = factory->CreateMultiGeometry();
multiGeometry->add_geometry(linestring);
PlacemarkPtr placemark = factory->CreatePlacemark();
placemark->set_geometry(multiGeometry);
placemark->set_styleurl("#ts_2_tb");
placemark->set_name("Ground track");
document->add_feature(placemark);
}
// Add wall axes to <Document>
FolderPtr folder = factory->CreateFolder();
for (int i=0; i<numberOfWallAxes; i++) {
LineStringPtr linestring = factory->CreateLineString();
linestring->set_extrude(false); // Do not extrude to ground
linestring->set_altitudemode(kmldom::ALTITUDEMODE_ABSOLUTE);
linestring->set_coordinates(wallAxes[i]);
MultiGeometryPtr multiGeometry = factory->CreateMultiGeometry();
multiGeometry->add_geometry(linestring);
PlacemarkPtr placemark = factory->CreatePlacemark();
placemark->set_geometry(multiGeometry);
placemark->set_styleurl("#ts_1_tb");
folder->add_feature(placemark);
folder->set_name("Wall axes");
}
document->add_feature(folder);
// Create <kml> and give it <Document>.
KmlPtr kml = factory->CreateKml();
kml->set_feature(document); // kml takes ownership.
// Serialize to XML
std::string kml_data = kmldom::SerializePretty(kml);
// Save to file
if (QFileInfo(outputFileName).suffix().toLower() == "kmz") {
if (!kmlengine::KmzFile::WriteKmz(outputFileName.toStdString().c_str(), kml_data)) {
qDebug() << "KMZ write failed: " << outputFileName;
QMessageBox::critical(new QWidget(),"KMZ write failed", "Failed to write KMZ file.");
return false;
}
} else if (QFileInfo(outputFileName).suffix().toLower() == "kml") {
if (!kmlbase::File::WriteStringToFile(kml_data, outputFileName.toStdString())) {
qDebug() << "KML write failed: " << outputFileName;
QMessageBox::critical(new QWidget(),"KML write failed", "Failed to write KML file.");
return false;
}
} else {
qDebug() << "Write failed. Invalid file name:" << outputFileName;
QMessageBox::critical(new QWidget(),"Write failed", "Failed to write file. Invalid filename");
return false;
}
return true;
}
/**
* @brief KmlExport::CreateLineStringPlacemark Adds a line segment which is colored according to the
* vehicle's speed.
* @param startPoint Beginning point along line
* @param endPoint End point point along line
* @return Returns the placemark containing the line segment
*/
PlacemarkPtr KmlExport::CreateLineStringPlacemark(const LLAVCoordinates &startPoint, const LLAVCoordinates &endPoint, quint32 newPlacemarkTime)
{
CoordinatesPtr coordinates = factory->CreateCoordinates();
coordinates->add_latlngalt(startPoint.latitude, startPoint.longitude, startPoint.altitude);
coordinates->add_latlngalt(endPoint.latitude, endPoint.longitude, endPoint.altitude);
LineStringPtr linestring = factory->CreateLineString();
linestring->set_extrude(true); // Extrude to ground
linestring->set_altitudemode(kmldom::ALTITUDEMODE_ABSOLUTE);
linestring->set_coordinates(coordinates);
StyleMapPtr styleMap = factory->CreateStyleMap();
// Add custom balloon style (gets rid of "Directions to here...")
// https://groups.google.com/forum/?fromgroups#!topic/kml-support-getting-started/2CqF9oiynRY
BalloonStylePtr balloonStyle = factory->CreateBalloonStyle();
balloonStyle->set_text("$[description]");
{
double currentVelocity = (startPoint.groundspeed + endPoint.groundspeed)/2;
// Set the linestyle. The color is a function of speed.
LineStylePtr lineStyle = factory->CreateLineStyle();
lineStyle->set_color(mapVelocity2Color(currentVelocity));
PolyStylePtr polyStyle = factory->CreatePolyStyle();
polyStyle->set_color(mapVelocity2Color(currentVelocity, 100));
// Link the style to the icon
StylePtr style = factory->CreateStyle();
style->set_balloonstyle(balloonStyle);
style->set_linestyle(lineStyle);
style->set_polystyle(polyStyle);
PairPtr pair = factory->CreatePair();
pair->set_styleselector(style);
pair->set_key(kmldom::STYLESTATE_NORMAL);
styleMap->add_pair(pair);
}
{
double currentVelocity = (startPoint.groundspeed + endPoint.groundspeed)/2;
// Set the linestyle. The color is a function of speed.
LineStylePtr lineStyle = factory->CreateLineStyle();
lineStyle->set_color(mapVelocity2Color(currentVelocity));
PolyStylePtr polyStyle = factory->CreatePolyStyle();
polyStyle->set_color(mapVelocity2Color(currentVelocity, 100));
polyStyle->set_fill(false);
// Link the style to the icon
StylePtr style = factory->CreateStyle();
style->set_balloonstyle(balloonStyle);
style->set_linestyle(lineStyle);
style->set_polystyle(polyStyle);
PairPtr pair = factory->CreatePair();
pair->set_styleselector(style);
pair->set_key(kmldom::STYLESTATE_HIGHLIGHT);
styleMap->add_pair(pair);
}
PlacemarkPtr placemark = factory->CreatePlacemark();
placemark->set_geometry(linestring);
placemark->set_styleselector(styleMap);
placemark->set_visibility(true);
// Create the timespan
TimeSpanPtr timeSpan = factory->CreateTimeSpan();
QDateTime startTime = QDateTime::currentDateTimeUtc().addMSecs(newPlacemarkTime); // FIXME: Make this a function of the true time, preferably gotten from the GPS
QDateTime endTime = QDateTime::currentDateTimeUtc().addMSecs(newPlacemarkTime);
timeSpan->set_begin(startTime.toString(dateTimeFormat).toStdString());
timeSpan->set_end(endTime.toString(dateTimeFormat).toStdString());
// Set the name
QDateTime trackTime = QDateTime::currentDateTimeUtc().addMSecs(newPlacemarkTime); // FIXME: Make it a function of the realtime preferably gotten from the GPS
placemark->set_name(trackTime.toString(dateTimeFormat).toStdString());
// Add a nice description to the track placemark
placemark->set_description(informationString.toStdString());
// Set the timespan
placemark->set_timeprimitive(timeSpan);
return placemark;
}
void ogr2altitudemode_rec (
GeometryPtr poKmlGeometry,
int iAltitudeMode,
int isGX )
{
PointPtr poKmlPoint;
LineStringPtr poKmlLineString;
PolygonPtr poKmlPolygon;
MultiGeometryPtr poKmlMultiGeometry;
size_t nGeom;
size_t i;
switch ( poKmlGeometry->Type ( ) ) {
case kmldom::Type_Point:
poKmlPoint = AsPoint ( poKmlGeometry );
if ( !isGX )
poKmlPoint->set_altitudemode ( iAltitudeMode );
else
poKmlPoint->set_gx_altitudemode ( iAltitudeMode );
break;
case kmldom::Type_LineString:
poKmlLineString = AsLineString ( poKmlGeometry );
if ( !isGX )
poKmlLineString->set_altitudemode ( iAltitudeMode );
else
poKmlLineString->set_gx_altitudemode ( iAltitudeMode );
break;
case kmldom::Type_LinearRing:
break;
case kmldom::Type_Polygon:
poKmlPolygon = AsPolygon ( poKmlGeometry );
if ( !isGX )
poKmlPolygon->set_altitudemode ( iAltitudeMode );
else
poKmlPolygon->set_gx_altitudemode ( iAltitudeMode );
break;
case kmldom::Type_MultiGeometry:
poKmlMultiGeometry = AsMultiGeometry ( poKmlGeometry );
nGeom = poKmlMultiGeometry->get_geometry_array_size ( );
for ( i = 0; i < nGeom; i++ ) {
ogr2altitudemode_rec ( poKmlMultiGeometry->
get_geometry_array_at ( i ), iAltitudeMode,
isGX );
}
break;
default:
break;
}
}